All Questions
40 questions
2
votes
1
answer
576
views
Basic Ticket booking code with Unit tests
I am going to run a session for a few other developers who are new to Junit, mocking, etc.
I have designed a very simple application with classes and tests to demonstrate how to do unit testing. ...
- 355
5
votes
2
answers
499
views
Hungarian algorithm for optimal assignment
The assignment problem is about assigning tasks to workers, where each pair (worker, task) has a cost. The Hungarian algorithm builds an optimal solution for this problem. It has two variants, ...
- 385
3
votes
1
answer
1k
views
Testing DAO Delete User
I have several Dao classes, including a UserDao, below. The DAOs have many methods, but I'm focussing on deleteUser:
...
- 63
0
votes
2
answers
1k
views
Need Feedback on JUnit test comparing two timestamps
I am writng a JUnit test case for the below methods :
...
3
votes
2
answers
500
views
Unit testing Roman-Arabic-Roman numeric converter
As you can see here, I wrote the methods public static int romanToArabic(String number) and ...
user214772
5
votes
3
answers
3k
views
Mars Rover technical Challenge in OOP
I am trying to practice OOP and TDD concepts,
I have written this code for Mars rover challenge from
marsrovertechchallenge .
Can you please review my code from my GitHub repository?
Or you can ...
1
vote
2
answers
71
views
Two BDD unit tests for an account repository with identical code
I am testing my repository class:
interface AccountRepository{
void save(Account account);
Optional<Account> findById(Long id);
}
And when writing ...
- 179
2
votes
1
answer
48
views
Testing a probabilistic prime-testing algorithm that may fail
I have implemented Pollard's Rho algorithm in Java. Due to the nature of it there is a small chance for it to fail (have not seen it happening yet).
Since I do not ...
- 165
3
votes
1
answer
273
views
Unit Testing for Spring Controller
This is my first attempt to do unit test for one of my controllers.
...
- 133
0
votes
1
answer
1k
views
Assert LinkedHashMap element in jUnit test [closed]
So I have some test, maybe the given side of that test is not so important to catch the point of my confusion. I wrote
...
- 105
4
votes
1
answer
7k
views
Unit test for class converting between DTOs and entities
Is this correctly written test? Tested class is responsible for converting from dto to entity class and i wanted to test it. Are these tests useful and well designed? I have a problem understanding ...
- 41
4
votes
3
answers
925
views
Fizz Buzz Test Driven Development
Task:
Create the Fizz Buzz game using Test Driven Developoment. Print the correct word for range 1-100.
The implementation:
...
0
votes
1
answer
3k
views
Espresso tests that check if Snackbar is displayed and if there is an internet connection
I have recently began writing tests for Android using the espresso library.
Here I have three tests.
The first test is to check if a snackbar appears when searching with blank text.
The second is a ...
- 655
4
votes
1
answer
16k
views
Mock Entity or DTO for unit tests [closed]
Is this good approach, to mock some domain object, for example javax.persistence.Entity, or DTO (data transfer object)? Below is ...
- 140
10
votes
3
answers
9k
views
Table Driven Test in Java using Junit4
I was creating some solving algorithm and write test for it. this is the tests :
...
- 479
2
votes
1
answer
171
views
Testing the Dutch national flag task
I recently coded the Dutch national flag problem in Java and wrote some tests.
The array in zero-indexed.
Please take a look at how I verify that elements of the output array are in the right order. ...
- 1,369
3
votes
4
answers
695
views
Unit testing for concatenating two int arrays
Using Java 1.8, I created the following implementation to concat two int arrays:
...
- 289
2
votes
1
answer
550
views
Unit test code for a private median-of-three function, using reflection [closed]
A Junit test class is used to test the class LibraryCounter. Reflection was used to test the private methods. This made the code much more complicated.
...
- 55
6
votes
1
answer
1k
views
Piece class as part of implementation for the Tetris game
Here is my Piece class as part of implementation for the Tetris game. If possible, I want my code to face the same level of scrutiny as actual production code.
...
- 607
3
votes
1
answer
4k
views
Unit tests for custom Map wrapper
A while ago I asked for a code review of my automatically keyed map and I have recently had the time to get around to writing some unit tests for it using JUnit4.
The test ensures that all of the "...
- 1,641
3
votes
1
answer
158
views
class Taboo<T> -- sort passed in List<T> according to 'rules'
I know as a matter of fact that there are many areas upon which my code could be improved. I was wondering if anyone can provide me with suggestions on how Taboo ...
- 607
4
votes
2
answers
186
views
Find items that appear the same number of times in two collections
Here is a Java collection puzzle I found online. I was wondering if anyone can provide me with suggestions on how Appearance and tests can be improved. Suggestions ...
- 607
7
votes
2
answers
11k
views
Unit testing Equals, hashcode and comparator - asserting contracts
After reading Joshua Blosh's Effective Java 2nd edition, I decided to implement equals, hashcode and comparable(where applicable) to every class I have been implementing.
I have written a generic ...
- 185
3
votes
2
answers
17k
views
JUnit testing for Calculator in Java
I made a simple calculator.
I would also like to write some simple unit tests for my CalculatorEngine class. I had to make some of my ...
- 185
7
votes
3
answers
310
views
Understanding my permalink service tests
I started writing unit tests cases recently. For now, I created only "perfect case" where there is no error. However, the test seems to me difficult to maintain and difficult to understand.
How can I ...
- 299
6
votes
1
answer
210
views
Java 8 unit test for third-party data feeds
Use Case
I have a service that does processing of records from multiple third-party feeds. The steps are generally identical for each feed, but each feed is populated in a different location on an ...
- 2,284
5
votes
3
answers
798
views
Random letter test
My first test (randomUpperCaseLetter) checks if the returned random letter is an uppercase ASCII one. The second one (...
- 261
8
votes
2
answers
2k
views
Unit Tests for a Fraction Class
As my first Java homework, I wrote a class to handle fractions. This Fraction class implements basic operations for the fractions (addition, subtraction, ...
- 181
4
votes
1
answer
127
views
TDD and use case: cook dish with substitutions
This is code for a class that takes available ingredients and returns left over ingredients after making a dish.
Cesars: 2 carrot 4 ice burg 1 chicken 1 beans
Russian: 2 carrots 2 beans 2 chicken
If ...
- 223
12
votes
4
answers
13k
views
Align Strings for Output
I wrote a class which can format input so that it is properly aligned.
I'm interested in all suggestions (regarding structure, usability, style, naming, comments, etc).
I'm especially wondering ...
- 25.1k
5
votes
3
answers
14k
views
Unit testing a servlet in a meaningful way
I have to write a unit test for the method processRequest in the servlet below and I'm wondering if:
It just shouldn't be done.
The class should be rewritten / ...
- 151
11
votes
1
answer
30k
views
JUnit extending abstract test class
I have been thinking quite some time and asked an StackOverflow question about extending abstract test classes, but I haven't been able to do it until now.
I'll list my approach and then discuss some ...
- 10.6k
9
votes
2
answers
4k
views
Create better Unit test
Question: Is there anything you could do in order to improve the test?
I am using Spring Framework 4, Hibernate 4, JUnit 4. All DAO unit tests inherit from TestDaoSetup class:
...
user41403
30
votes
4
answers
3k
views
Just a lowly counter that turned out to be surprisingly complicated
While writing this review, I saw a need for a Counter object similar to Python's. It seemed like it would be easy to write such a class, but it turned out to be ...
- 144k
10
votes
3
answers
6k
views
Simple Hello World with unit tests
This is a simple hello world sample project used for instruction. I'm just looking for general comments on the approach and design.
AdvancedHelloWorldTest.java
...
- 103
4
votes
2
answers
145
views
Review of java interface for constructing brain model
I have built a partial human brain model and the following is an example of how I use all the classes. I was wondering if anyone could critique my implementation strategies because I feel like the ...
- 483
3
votes
2
answers
7k
views
Mocking utility class for database testing
I have these classes that have a boilerplate way of initialization. So, instead of writing it each time, I wrote a class called MockUtil.java, and I put the ...
4
votes
2
answers
2k
views
Printing a diamond-shaped figure
How can I optimize this code to have fewer loops and return values for unit testing?
...
- 41
3
votes
1
answer
172
views
Designing a listener method and making it Testable
I have a java based server application that needs to support multiple clients. In the main class I have a method that runs in an infinite loop and waits for client connection. Following is this method:...
- 195
2
votes
2
answers
8k
views
Tesing a simple calculator class with JUnit/JMock
I'm playing around with JMock and trying to understand whether I understand the idea correctly.
There's an interface Printer aimed to print integers somewhere. ...
- 776